Conan Tu, MD

Peter D Buffa, MD is a board-certified physician, specializing in Internal medicine. With an office conveniently located in Bethpage, NY, Dr. Buffa can help with your everyday health needs, from regular checkups to caring for you when you’re injured or ill. At Optum, primary care physicians can oversee all your health care needs. We care for short-term health problems like the common cold or a sprained ankle. Or, long-term health problems, such as allergies, high blood pressure, heart disease and diabetes. Our doctors will work with specialists to make sure you get any extra care you might need. Optum accepts most major health plans.

Endocrinology involves diseases of the endocrine system. These diseases affect the body's hormones and metabolism. When hormones are out of balance, they can affect many parts of your health, like energy, weight, and mood. Optum can help identify the cause of your symptoms and provide diagnosis and treatment to help you live your healthiest life. Our board-certified endocrinologists specialize in treating a range of conditions including adrenal disorders, diabetes, polycystic overy syndrome (PCOS), genetic endocrine disorders, parathyroid disorders and thyroid disorders. Our team also provides a range of diagnostic testing and treatment services including bone density, continuous glucose monitoring and insulin pumps.

Danielle Mercado DPM is a Board Certified Podiatrist. Her academic publications include several articles in the Journal of Foot and Ankle Surgery as well as in the New York College of Podiatric Medical Review. Dr...